|
Title:
If the
target were allowed to just declare a maximum, the initiator would be required
to always send that amount when sending non-immediate unsolicited. But maybe it
would not be able to.
See
9.3.4:
If the Expected Data
Transfer Length is higher than the FirstBurstLength (the negotiated maximum
amount of unsolicited data the target will accept), the initiator MUST send the
maximum amount of unsolicited data OR ONLY the immediate data, if
any.
Eddy
11.14
FirstBurstLength
Use: LO Senders:
Initiator and Target Scope: SW Irrelevant
when: SessionType=Discovery Irrelevant when: (
InitialR2T=Yes and ImmediateData=No )
FirstBurstLength=<numerical-value-512-to-(2**24-1)>
Default is 65536 (64 Kbytes). Result function is
Minimum.
The initiator and target negotiate the maximum
amount in bytes of unsolicited data an iSCSI initiator may
send to the target during the execution of a single SCSI
command. This covers the immediate data (if any) and the
sequence of unsolicited Data-Out PDUs (if any) that follow
the command.
FirstBurstLength MUST NOT exceed
MaxBurstLength.
I understand we're past the revision stage
on iSCSI, but I'm confused by some of the negotiation logic. If
FirstBurstLength only relates to the number of bytes Initiator->Target, why
would there be a need to negotiate the value versus just having the target
declare a maximum (if not equal to the default)?
Thanks.
Home
Last updated: Thu Oct 10 16:19:04 2002
11947 messages in chronological order
|